/*
 * Copyright 2016-2019 yoara
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package yhao.infra.feature.solr.local.core.stats;

import org.apache.solr.client.solrj.response.QueryResponse;
import yhao.infra.feature.solr.local.SearchCriteria;
import yhao.infra.feature.solr.local.core.SolrCallbackHandler;
import yhao.infra.feature.solr.local.core.SolrTemplate;

import java.util.ArrayList;
import java.util.List;

/**
 * stats查询回调处理类
 *
 * @author yoara
 */
public class StatsCallbackHandler<T> extends SolrCallbackHandler<T> {
    private StatsSolrPagination pagination;
    public StatsCallbackHandler(SolrTemplate<T> solrTemplate, SearchCriteria criteria, StatsSolrPagination<T> pagination) {
        super(solrTemplate, criteria, pagination);
        this.pagination = pagination;
    }

    @Override
    public List<T> parseQueryResponse(QueryResponse response) {
        StatsSolrPagination<T> page = (StatsSolrPagination<T>)pagination;
        if(response.getFieldStatsInfo()!=null){
            page.setStatsFields(new ArrayList<>(response.getFieldStatsInfo().values()));
        }
        return super.parseQueryResponse(response);
    }
}
